I believe this is the correct way to request an account deletion as per Pokechu22...
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No, I do indeed want the account on Jira deleted. I initially came to report a bug here and I had made this account when I was 15 or so. I don't play minecraft a lot anymore. I would have let this account stay on the side but even though my notifications are set to not send me any mail, out of no reason, I have started getting mails on my email for as long as since a year, and on issues that i am not even following. Anyhow, i believe i won't be using this website and all and just wish my account and data be deleted, with any other necessary data just be anonymized.
Hi there! I'm just a volunteer (official help on it's way!), if your request is to delete your account on Mojira forums (where we are currently) then I can't aid you there and you'll have to wait for that to be achieved, but if you mean on Minecraft itself then please visit:
https://help.minecraft.net/hc/en-us/requests/new
and flag your issue as account support > delete account.
Mojang tends to offer account deactivation first but if you're pursuing a full deletion (inc. all data) you'll need to specify & potentially reply to the auto response saying so too.
Hope you get this sorted!